Hi Sunny,
I believe all PSR-3000 are assembled/made in Indonesia.
It enables Yamaha to keep the price down, as labour is less expensive than in Japan.
I've had great service from mine which is 2 years old and played at least 4-5 hours a day.
Terrific instrument.
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.